i am not the best total fitness guy to give advice, but being younger and pretty on top of my game ive had prolly 20 friends ask me how to get their GF skinner, the GF asks, both ask, etc.
Men, who loves or is with a women trying to lose weight, who gives the advice......will get zero pussy after a while. Things can easily, easily take turns for the worse. Typically women cant take honest, tough advice from someone like that. They will get emotionally hurt or angry, etc.
Think of it like walking out into a mine field. Sooner or later you will step on one & it will go boom.